Journal ArticleDOI
A semi-empirical method of absorption correction
TLDR
An extension of Furnas's method is described in this paper, where the variation of intensity of an axial reflection as the crystal is rotated about the goniometer axis is used to give a curve of relative transmission T against azimuthal angle ϕ for the corresponding reciprocal lattice level.Abstract:
An extension of Furnas's method is described. The variation of intensity of an axial reflection as the crystal is rotated about the goniometer axis is used to give a curve of relative transmission T against azimuthal angle ϕ for the corresponding reciprocal lattice level. Transmission coefficients for any general reflexion hkl are then given approximately by T(hkl) = [T(ϕinc) + T(ϕret)]/2 where ϕinc and ϕret are the azimuthal angles of the incident and reflected beams. Equations are derived for (ϕinc and ϕret and the accuracy of the method is discussed.read more
Citations
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Journal ArticleDOI
Influence of ligand backbones and counter ions on structures of helical silver(I) complexes with di-Schiff bases derived from phthalaldehydes and diamine
TL;DR: In this article, five silver(I) complexes of Schiff bases, [Ag2L2][ClO4]21, Ag2L 2][PF6]2·H2O 2, Ag 2L 2 [NO3]23, 1∞[(AgL′)(dnb))(H 2O)0.25] (dnb = 3,5-dinitrobenzoate) 4 and 1 ∞[AgL 2 ](NO3)] 5 were synthesized, where L and L′ are derived from the
Journal ArticleDOI
Crystal structures and magnetic properties of the squarate-O1,On-bridged dinuclear copper(II) complexes [Cu2(phen)4(C4O4)](CF3SO3)2 · 3H2O (n=2) and [Cu2(bipy)4(C4O4)](CF3SO3)2 · 6H2O (n=3)
TL;DR: In this article, two dinuclear copper(II) complexes of the formula [Cu2(phen)4(C4O4)](CF3SO3)2·· 3H2O (1) and [Cu 2(bipy) 4(C 4O4) (2) were synthesized and characterized by single-crystal X-ray diffraction.
Journal ArticleDOI
Structures of photochemically prepared mixed-valence polyoxovanadateclusters: oblong[V18O44(N3)]14-, superkeggin[V18O42(PO4)]11- and doughnut-shaped[V12B32O84Na4]15- anions
TL;DR: Three mixed-valence polyoxovanadates have been photochemically synthesized and characterised by X-ray single-crystal analysis and magnetic measurements in this article.
Journal ArticleDOI
A New Three-Dimensional Vanadium Selenite, (VO)2(SeO3)3, with Isolated and Edge-Shared VO6 Octahedra
TL;DR: In this paper, a single crystal of (VO)2(SeO3)3 has been determined by single-crystal X-ray diffraction and the crystal structure consists of VO6 octahedra and SeO3 groups.
Journal ArticleDOI
Activation of C−F and C−H Bonds by Platinum in Trifluorinated [C,N,N‘] Ligands. Crystal Structures of [PtFMe2{Me2NCH2CH2NHCH(CH2COMe)(2,4-C6H2F2)}] and [PtMe{Me2NCH2CH2NCH(2,3,4-C6HF3)}]
TL;DR: In this paper, a trifluorinated ligand Me2NCH2CH2NCHR (R = 2,3,4-C6H2F3 (2c), 2,4,5-C 6H2 F3 (1), 3, 4,4 5-C C 6H 2F3(2d), 3.4 5 -C 6 H 2F 3 (2e), 4.5 -C 7 H 2 F 3 (3, 4 H 2
References
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Book
International tables for X-ray crystallography
Norman Fordyce McKerron Henry,Lonsdale, Kathleen, Dame,John S. Kasper,Caroline H. MacGillavry,Gerard D. Rieck,James A. Ibers,Walter C. Hamilton +6 more
ReportDOI
A fortran program for calculating single crystal absorption corrections
D.J. Wehe,W.R. Busing,H.A. Levy +2 more
TL;DR: A Fortran program is described for calculating the absorption correction for application to single crystal x ray or neutron intensity measurements and is available in the form of symbolic punched cards.